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摘要:
Multipeak characteristics of field emission energy distribution (FEED) from semiconductor films has been investigated theoretically. It is shown that for wide bandgap semiconductors with low or negative electron affinity, the appearance of FEED multipeaks is inevitable when a high electric field is applied, and the extra peaks will become pronounced while the peak positions shift toward the lower energy side with increasing field, which agrees well with experimental observations. It is also found that the number, strength, and position of FEED peaks are strongly dependent on factors such as field intensity, electron affinity, and doping levels. Resonant electron tunneling is suggested as an appropriate model to describe the FEED multipeak characteristics observed.
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来源 :
PHYSICAL REVIEW B
ISSN: 2469-9950
年份: 2004
期: 19
卷: 70
3 . 7 0 0
JCR@2022
ESI学科: PHYSICS;
JCR分区:1